1. The tabulated allowable loads are based on a safety factor of 5.0 for installations under the IBC and IRC. For installations under the UBC use a safety factor of 4.0 (multiply the tabulated allowable loads by 1.25).
2. Values for 8-inch wide CMU Grade N, Type II , lightweight, medium-weight and normal-weight concrete masonry units conforming to UBC Standard 21-4 or ASTM C90.
3. The masonry units must be fully grouted with grout complying with UBC Section 2103.4 or IBC Section 2103.12.
4. Mortar is prepared in accordance with UBC Section 2103.3 and UBC Standard 21-15, or IBC Section 2103.8.
5. The minimum specified compressive strength of masonry, f'm, at 28 days is 1,500 psi.
6. Embedment depth is measured from the outside face of the concrete masonry unit.
7. Allowable loads may be increased 33 1/3% for short-term loading due to wind or seismic forces where permitted by code.
8. Grout filled CMU wall design must satisfy applicable design standards and be capable of withstanding applied loads.
9. Refer to allowable load adjustment factors for spacing and edge distance.

Figure 1

Shaded Area = Placement for Full and Reduced Allowable Load Capacity in Grout-Filled CMU